Crystals of Power

I'm sure you've noticed 'em, <name>. They're everywhere! What am I talking about? Why, the crystals, of course! The crystals... They're all over the crater. Most people ignore them, but I have a strange feeling that they hold power within them. I've been doing experiments here with them for a while, but I can't seem to find anything. Well, I haven't yet, anyway. Say, I'm running a little low on the crystals I have here -- think you might be able to collect some more for me?